9. shot (n.) a consecutive series of pictures that constitutes a unit of action in a film
The vacuum level is determined by the pressure differential between the evacuated volume and the surrounding atmosphere. Several units of measure can be used. Most refer to the height of a column of mercury â usually inches of mercury (in.-Hg) or millimeters of mercury (mm-Hg).
Ultra-high vacuum. Ultra-high vacuum (UHV) is the vacuum regime characterised by pressures lower than about 10â7 pascal or 100 nanopascals (10â9 mbar, ~10â9 torr). UHV conditions are created by pumping the gas out of a UHV chamber.